> if you can even get them in a timely fashion This. Not just materials but parts because of supply chain backups. Oh, and general worker rates. I just had to

> if you can even get them in a timely fashion This. Not just materials but parts because of supply chain backups. Oh, and general worker rates. I just had to replace a hot water heater. Big box stores had prices listed (~$1300 but no stock). Plumber wanted to charge $4k for the equipment and installation. Luckily I knew someone who had wholesale accounts, called all over the state, and found one. Then I did the install in ~2 hours. Dealing with that for an entire house, sounds like a terrible experience.